[Feature Request] Per-core CPU visualization

[Dieterbe]

in waybar, you can define cpu visualization like so:

    "cpu": {
        "format": "<span letter_spacing='-4000'>{icon0}{icon1}{icon2}{icon3}{icon4}{icon5}{icon6}{icon7}{icon8}{icon9}{icon10}{icon11}{icon12}{icon13}{icon14}{icon15}</span>",
        "format-icons": ["▁", "▂", "▃", "▄", "▅", "▆", "▇", "█"],
}

so it picks the right icon for each core
and looks something like this

I find this really nice to get a quick overview. and there's a big difference between knowing i have 8 cores maxed out, and 8 cores idle, vs "cpu is at 50%". the former tells me i'm hitting a bottleck, the latter doesn't.
also you can assign colors (e.g. if >70, make it orange, and if >90 make it red) - edit: i created PR #1166